Cellar-door hinge



July 5, 1927.

H. BLUM CELLAR DOOR HINGE Filed April 10. 1925 H-EZUM,

INT/ENTER,

- Aziwmsra Patented July 5, 1927.

PATENT OFFICE.

HYMANBLUM, F PITTSBURGH, PENNSYLVANIA.

CELLAR-noon HINGE.

Application filed April 10, 1925. Serial No. 22,237.

The present invention relates to cellar doors, and hasfor its object the provision of :adoor WlllCll'llZlS the following named characteristics, to wit; the hinges used are so constructed that water cannot get into the working parts of the said hinges; ice which may 'formwithin the hinge boxes can be readily broken .up by the action of certain feature-s of the. device which will be described as the specification proceeds; means of properly andsufiiciently anchoring the hinge boxes in the concrete back wall in which same are set, is provided; and means is also provided for thoroughly draining the 1 hinge-boxes, so that water cannot ordinarily lodge in them. These and other features of the present invention willbe brought out hereinafter. r

In the accompanying drawings forming part of this specification I have illustrated the invention in the most desirable form I have so far devised for the purpose in hand Figure 1 of the drawings is a plan view of a portion of a cellar door showing one of the hinges and hinge-boxes used. a

Figure 2 is a vertical section on line 22 of Figure 1.

Figure 3 is a front elevation of Figure 1, taken from the right thereof.

Figure 4 is a vertical section on line 4-4 of Figure 1. v V

Figure 5 is a diagrammatic plan view of a cellar door showing the hinges in position on the door.

By numeral 1 I have indicated a hinge which is under the door-plate or sheathing 2 forming the cellar door. 3 is a metal box which is embedded in concrete 4;, and said box is provided with the anchor flange 5 40 for the purpose of securely anchoring the hingebox against displacement. The hingef 1 is pivoted by the two cars or pintles 6, 7 which are in engagement with complementary sockets in the sidewalls of the hingebox. The pintles 6 and 7 have preferably enlargements 26, 26 formed on their ends which serve to retain them in the side walls of the hinge-box as shown.

The hinge member 1, is provided with a pair of inner bossed enlargements 36, 36 which form bearing points, which bear against the under face of the angle-iron cap 8, and take the wear at these points, and said hinge member 1 iscut away at 37, both of which features insure smooth movement of revolution, when the hinge member 1, is revolved on its pintles. a i

an angle-iron 8 coversv the box and the pintl'es 6, 7, and said angle has a depending leg 9, whichis cut away at 1O, 10 to permit the hinge members to operate in the hinge-box 3. The peculiar or specialshape of the hinge member atpoints 1,1, 12, permits the door- 2 to be raised as showni-n Figure 1 upon the pintles 6 and 7, without interfering with the corner 13 of the angleiron 8. His seen that" the hinge 1 can be inserted by its two ear pintles 6, and 7 in its bearings 14, 1 1 before the cap angle 8 is in position, .i. e. laid in its bearings from the top downward as seen in Figures land 2 of the drawings, sinceysaid bearings are open attlieir top at 15, 15. This arrangement of parts permits of .a ready assemblage of the hinge 1 in the hinge-box 3..

It will be noted that the side walls ofthe hinge-box 3 are extended at'l6, 16 to provide sufficient thickness forgthe bearings 14, 1 1, and that the interior of the hinge box has a sloping cavity 17 so that any moisture which may get into the box will naturally I drain away. Two screws 19, 20 on each side of the hinge secure the cap angle 8 in osition, and engage suitable extensions 2 27 formed on the side-walls 21, 21 of the hingebox. In addition to the anchor rib 5, it will be noted that the hinge 1 has the following crush any ice within the, hinge-box 3. I

While I have described but one hinge, it is seen from the Figure 5, that two hinges are usually required with accompanying hingeboxes for each cellar door, and that the angle-iron cap 8 may be continuous from 28,

to 29 of said Figure 5 if desired.

Attention is directed to other features as follows. The top plate 2 extends over the. angle cap 8 at 30, which prevents water'getting into the hinge '1, and the hinge-box 3, and the angle talies the load on the door plate, which relieves the hinge member 1 from transferring said load to the pintles, 6, and 7. y

It will be also noted that while the angle cap 8 is cut away at 10, there yet remains a portion 31 of the downstanding leg of same, which is sufficient to give stiffness and strength to the angle 8, between points 32, and 33 of Figure 3.

The curved top 3i ol' the rear wall 85 of the hinge-box is arranged to deflect any water which may come downward,from the interior of the box 3, which when it freezes hinders the operation of the hinge.

From the above it is seen that I have provided a very eliieient cellar door having the features above described, and which is at the same time a practical device for the purpose intended.

I claim:

1. In a cellar door, a hinge-box having an 7 anchor flange and an inclined bottom, a hinge member revolubly mounted in the walls of the hinge-box, a plurality oi transverse ice-cutters formed on the rear and downwardly extending portion of the hinge member, for removing ice "from the rear side and bottom of the hinge-box when. the hinge member is revolved on its pintles.

2. In a cellar door, a hinge-box, a hinge member having a number of transverse iceentters formed 011 its rear and downwardly projecting portion, adapted to cut away ice from the rear side wgl and bottom 01' the hinge-box when the hinge member is revolvedon its axis. I

3. In a cellar door, a hinge-box, a hinge member revolubly mounted in the hingebox a plurality of ice-cutters,' formed on the rear and downwardly projecting portion of the hinge-member, an angle-iron cap adapted to completely enclose the top and front side of the hinge-box, and having a cut-away portion formed therein to permit the reciprocation oi the hinge member, and ice-cutters therethrough.

i. In a cellar door, a hinge-box having a pair of outwardly extended side walls formed thereon, an angle-iron cap enclosing the top and front side of the hinge-box, a hinge-member having a pair of pintles mounted in the walls of the hinge-box, an outer enlarged collar on each pintle adapted to engage the outwardly extended side wall of the hinge-box and the under side 01 the s angle-iron cap, a pair of inner bossed enlargements formed on the pmtles-of the hinge member, each adapted to engage the inner side wall of the hinge-box and the an; 7

der side 01' the angle-iron cap, and a number oi? transverse ice-cutters formed on the rear and downwardly extending portion of the hinge member for clearing away ice from the interior of the hinge-box when the hinge n nnber is revolved on its pintles.

In testimony whereof I afiix my signature.

HYMAN BLUM, 

